fix(cosmos3_edge): bump backend_equivalence_atol for Pillow 13.x (miss from #50105) (#50327)

fix(cosmos3_edge): bump backend_equivalence_atol for Pillow 13.x bicubic change (#50105 miss)

Co-authored-by: ydshieh <ydshieh@users.noreply.github.com>
Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: ydshieh

tests/models/cosmos3_edge/test_image_processing_cosmos3_edge.py

@@ -55,6 +55,7 @@ def prepare_image_inputs(self, equal_resolution=False, numpify=False, torchify=F
 @require_vision
 class Cosmos3EdgeImageProcessingTest(ImageProcessingTestMixin, unittest.TestCase):
     image_processor_tester_class = Cosmos3EdgeImageProcessingTester
+    backend_equivalence_atol = 0.5  # Pillow 13.x changed bicubic resize pass order (see #50105)
 
     def assert_packed_output(self, output, batch_size):
         """Check Edge's flattened patch matrix against its per-image THW grids."""